Disable bed temperature offset compensation

Not sure why this exists. See:
https://github.com/prusa3d/Prusa-Firmware/issues/2642
https://github.com/prusa3d/Prusa-Firmware/issues/2601

Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h

@@ -481,9 +481,9 @@
 #define MAX_BED_POWER 255 // limits duty cycle to bed; 255=full current
 
 // Bed temperature compensation settings
-#define BED_OFFSET 10
-#define BED_OFFSET_START 40
-#define BED_OFFSET_CENTER 50
+//#define BED_OFFSET 10
+//#define BED_OFFSET_START 40
+//#define BED_OFFSET_CENTER 50
 
 
 #ifdef PIDTEMPBED